Comparative Analysis of OFDM Signal on the Basis of Different Modulation Techniques

Orthogonal Frequency Division Multiplexing (OFDM) is transmission multi-carrier method used in wireless communication systems. OFDM has a lot of advantages, including a high spectral density and a resistance to channel fading. The primary objective is to accomplish a low or zero-bit error Rate (BER) when employing OFDM in a wireless communication system. However, contemporary challenges include the complexity of OFDM design and the demand and selection of an appropriate modulation mechanism. As a result, this work develops two OFDM based system designs to examine the working presentation of the OFDM in wireless communication. Communication schemes necessitate a system with high baud rates, minimum inter-carrier interference, and minimum inter-symbol interference. OFDM is particularly important in 4G communication systems such as fixed Wi-Fi, fixed WiMAX, mobile WiMAX, and Long-Term- Evolution (LTE). In this research, the influence of altering design factors on OFDM systems will be investigated by simulating several OFDM systems with different modulation strategies using MATLAB / Simulink.